Fanning-mill



E. BLESS.

Fanning Mili.

No. 7,849. Patented Dec. 17, 1850.

E. BLESS. OF MINERVAt KENTUCKY.

EARNING-MILL.

Specification of Letters Patent No. 7,849, dated December 17, 1850.

To all when: it may concern Be it known that I, Eumzan Bness, of Minerva, in the county of Mason and State of Kentucky, have invented sundry new and useful Improvements in the Fann ng-Mill: and I do hereby declare the following to be a full and exact description thereof, reference being had to the accompanylngdrawings. making a part of this specification. in which v Figure 1. is a perspective view, and 111g. 2, a longitudinal vertical section of my improved fanning mill, and .Fig. 3. is a vertical transverse section in the line at a: of Fig. 1.

Similar letters indicate like parts 1n all the figures.

My first improvement to the fanning mill, consists in placing only the riddles, or sieves, f, g, and the straw separator 1.1. in the shoe A, and supporting and operatmg the shoe in such a manner as to impart to it a smooth reciprocating horizontal movement, without the slightest tremor or vertical action, for the purpose of preventing the dancing of the kernels of grain upon the riddles. and thereby enabling them to pass through the same, in less than half the tune that would be required for the gram to pass through riddles or sieves having the usual tremulous vibrating movement imparted to them.

My second improvement, consists in placing the screen It, in a light auxiliary frame B, located under the shoe, and confined to elastic supports, for the purpose of enabling the greatest possible amount ofrectprocating andri'efriulofis motion to be nnparted to it, and thereby causing the grains, seeds, or other substances that fall upon 1t, to rebound therefrom and dance upon the screen, by which the blast of air from the fanners is enabled to take hold of and carry off every substance and impurity that is lighter than the kernels of grain, or seed to be cleansed.

My third improvement, consists in cansing the blast of air to strike obliquely upon the upper and under sides of the sieves 1n the shoe, and upon the upper side of the screen. when respectively arranged in my improved manner; for the purpose or enabling me to so combine the sifting, screening, and winnowing operations, as to perfectlv clean wheat. or seeds, by passing them in any well known or usual manner.

The shoe A, is supported and mm rocated as follows: p, p, are transverse ars made fast to the under side of the shoe, the ends of which pass through openings in the posts M, N. and rest upon friction rollers c, located therein, as shown in Fig. 1. A uniform reciprocating movement is imparted to the shoe from the crank on the fanning shaft, through the medium of the vertical shaft E, (secured in hearings to the side of the mill,) from which project the arms G, H, J; the arm G, projectin rearward, bein connected to the shoe, by the rod b; an the laterally projecting arm H, being connected to the fanning shaft, crank by the pitman K, as represented in Fig. 3.

All vertical and tremulous motion of the shoe upon its bearings is prevented, by the action of the springs F, made fast to the sides of the shoe and to the sides L, of the mill, as represented in Fig. 3; the said springs being so arranged and inclined as to press inward with a sufiiciently downward inclination, to prevent the shoe from rising from its bearings, however rapidly it may be reciprocated; thereby preventing the shoe from making a noise when operated, and causin it to move so smoothly that it does not impart the least motion to the frame of the mill, which ad 'antages, are in addition to the more importan one abss referred to, of causing the grain to pass through the riddles, placed in a shoe when thus arranged, with double the rapidity that it can be made to pass through riddles which have the ordinary tremulous vibratory motion imparted them.

The screen B, rests upon the four elastic supports, C, C, C, C, made fast to the sides of t 1e mill and to the corners of the screen; the screen is placed in such a position, and at such an inclination, that the portion of the blast thrown tangentially from the failning wingsY, Y, will strike the centers of the s reen.

The screen is connected to the arm J, projecting forward from the shaft E, by the connecting rod a, which reciprocates the screen back and fort-h antagonistically to the movements of the shoe A.

The fanning or wind wheel is driven in the direction of the arrows, producing what is called an over blast; a portion of the blast is thrown upon the up er sides of the riddles, or sieves g, in t e shoe b the guiding board S, laced over the disc arging opening from the fan box, as shown in Fig. 2. A portion of the blast is also directed upward against the under side of the riddles or sieves, by the inclinedboard t, placed in the position represented in F1g. 2. The sides B, B, of the screen frame, rise as near to the sides of the shoe, as they can without coming in contact, for the purpose of preventing the escape of air between the two.

The uniform reciprocating motion given to all parts of the screen h, combined with its tremulous vibrations u 11 its elastic bearings, cause the desired violent agitation of the kernels of grain, seeds, cheat. cockle, &c., as they fall upon it, to enable the blast to carry off every substance that is lighter than the kernels of grain, or Seeds, that the blast, sieves, and screen, have been prev!- ousl adjusted to clean.

T e gate e, that regulates the dischar of the grain from the hopper to the ridd es, 1 protect by the casing for the urpose of eitmbling me at all times to be ab e to oper a e 1 Having thus fully described the construction and operation of my improved fanning mill, what I claim therein as my invention and desire to secure b Letters Patent, is

The supporting an regulating the motion of the sieves g, f, by means of the rollers c, c, or their equivalents, and the spiral springs F, F, so arranged as to press the shoe, or sieve frame A, down upon the rollers, steadying its motion, and to a certain extent preventing any jar at the end of each vibration, substantially in the manner and for the purpose as herein set forth.

E. BLESS.

Vit-nesses:

Z. C. Roaanss, WM. D. Wasmnowox. 

